化工进展2018，Vol.37Issue(5)：1908-1915,8.DOI:10.16085/j.issn.1000-6613.2017-1399
SO2与O2对硫改性石油焦吸附剂脱汞性能的影响
Effects of SO2and O2on Hg0removal capacity of sulfur modified petrol coke adsorbents
摘要
Abstract
Petrol coke was modified uisng SO2as a gas activating agent. The physical and chemical properties of adsorbents were characterized using surface area and porosity analyzer, elemental analyzer,and X ray photoelectron spectroscopy(XPS). Mercury adsorption experiments were carried out on the fixed bed testing equipment;and the adsorption products were desorbed by temperature-controlled desorption experiment. The results indicated that the microstructure of the surface of the modified petrol coke had been improved effectively;and the surface sulfur content was dominated by the low valence sulfur which was beneficial to mercury adsorption. Adding O2to the simulated flue gas could effectively improve the mercury removal efficiency. But the addition of the SO2could inhibit mercury removal. the inhibition degree increased with the increase of the SO2 concentration. When O2and SO2were added together,the effect on removal of mercury was closely related to the concentration of the SO2. The experiments of mercury adsorption and temperature-programmed desorption at different temperatures showed that the high temperature could inhibit the oxygen-containing functional groups on the surface of the high sulfur petrol coke.关键词
硫改性/石油焦/二氧化硫/氧气/脱汞Key words
sulfur modification/petrol coke/sulfur dioxide/oxygen/mercury removal分类
资源环境引用本文复制引用
李娜,韦红旗,段钰锋,王晨平,佘敏,胡鹏,王双群..SO2与O2对硫改性石油焦吸附剂脱汞性能的影响[J].化工进展,2018,37(5):1908-1915,8.基金项目
国家重点研发计划(2016YFB0600604)及国家自然科学基金(51676041)项目. （2016YFB0600604）
